In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Zoot wrote: Sounds like dirty header pins or poor connection w/Key. I have had a number of instances where dirty pins or dirty connections cause total lack of comm. with the Key (which would also affect clock speed when the Key is generating the clock for you). ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=338530#m338697 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2009 (http://www.dotNetBB.com)